Pin-tumbler lock



1|. B-FWEYSINGER.

PIN TUWIBLER LOCK APPLICATION FILED JAN.19, 1922.

Patented 00m. 241, 1922.

rattled on, at, 12.

JOHN B. FREYSINGER,

OF STAMFORD, CONNECTICUT, ASSIGNOR TO THE YALE (it TOWIN'E MANUFACTURINGCOMPANY, OF STAIHFORD, CONNECTICUT.

PIN-TUMBLER LOCK,

Application filed January 19, 1922; Serial No. 530,337.

1 0 all whom it may concern:

Be it known that I, JOHN B. FREYSINGER, a citizen of the United States,and a resident of Stamford, in the county of Fairfield and State ofConnecticut, have invented certain new and useful Improvements inPin-Tumbler Locks; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to an improvement in pin tumbler locks, the objectbeing to con: struct the cylinder and housing for thepin tumblers ofsheet metal, so as to avoid ma chine work and thus materially reduce thecost of manufacture without impairing the eiiiciency or durability ofthelock.

With this object in view my invention consists in the details ofconstruction as will be more fully explained and pointed out in theclaims. a i

In the accompanying drawings, Figure 1 is a view in section of thecylinder and tumbler housing the tumblers being shown in elevation;Figure 2 is a view in perspective of the tumbler housing removed fromthe cylinder; Figure 3 is a similar view of a modified form of cylinderand tumbler housing and Figure 1 is another modification of the housing.

5 represents the cylinder made of sheet metal bent into shape, andprovided with openings for pin tumblers 6. These pin tumblers areadapted to enter recesses in a key plug, not shown, mounted. to rotatein the cylinder and be lifted bythe proper key to release the plug topermit the latter to be turned to actuate the bolt mechanism of a lockor other device, in the usual and well known manner. The edges of thesheet metal blank from which the cylinder 5 is made are preferablybrazed or otherwise secured together, and it is preferably provided withshouldered ends 7 to receive the ring shaped ends 8 of the housing 9,and with slots 10 to receive the tongues 12 on said housings so thatwhen the housing is assembled on the cylinder, the parts will be securedagainst the possibility of independent movement. v

The housing is made of sheet metal and comprises a top 11, ends 12 andsides 13, the

latter may be turned by ring shaped ends 8 being integral with the ends12, all of said. parts being struck up or stamped from a single sheet ofsuitable meta the ends 12 and sides 13 being bent as shown in Figures 1and 2 to form the housing and guide for the shanks 6 of the pin tumblers6. The tumblers 6 pass through openings in the cylinder 5 and entercorresponding holes in the plug, not shown, for locking the latteragainst rotation, the plug being provided with the usual key slot forthe passage of the key which operates in the Well known manner to liftthe pin tumble-rs to a position to release the plug so that the the key.

The shanks 6 of the pin tumblers pass through holeslt in the top of thehousing and are embraced by springs 15 whichbear at their upper endsagainst the inner face of the top of the housing and at their lower endsagainst the tumblers 6, or tumbler drivers as the casemay be, and tendto hold tllie tumblers in engagement with the key p ug. i

The front end 12 of the housing 9 is provided with integral cars 16 eachhaving a rivet hole therethrough for attaching the housing and cylinder5 carried. by the housing to the face plate of the lock.

If desired I may dispense with the ring shaped ends 8, shown in Figures1 and 2, and attach the housing to the cylinder by the tongues 12,dovetailed or otherwise secured to the cylinder as shown in Figure 3, ori: may dispense with the front plate 12 of the housing and provide theside member 13 thereof with the forwmfdly projecting integral tongues1.7 adapted to be passed through slots in the face plate of the lock andbe riveted thereto.

In all the forms the tumbler housing is made independent of thecylinder, and both parts are made of thin rolled or drawn metal stampedand bent into shape, and as the parts can be stamped with sharp cleanlines, accurate fit of the parts can be accomplished without any machinework and consequently at minimum. cost.

It is evident that many slight changes might be resorted to in therelative arrangement of parts shown and described without departing fromthe spirit and scope oil my invention hence I would have it understoodthat I do not wish to confine myselt to the exact construct-ion andarrangement ot parts shown and described but,

Having fully described my invention what I claim as'new and desire tosecure by Letters Patent is 1. In a pin tumbler lock, a cylinder formedfrom a metal blank bent into cylindrical form. a tumbler housing movabletumblers mounted in openings in the top of the cylinder and also in thetop of the housing and tree or unsupported between said cylinder and thetop of the housing, and springs for normally forcing the tumblers towardand into the cylinder.

2. In a pin tumbler lock,a cylinder and a tumbler housing separate fromthe cylindeiu the said housing having a projection. the said cylinderand housing being made of sheet metal bent into shape and securedtogether by the projection on the end of the housing engaging; thecorresponding end ol the cylinder.

8. In a pin tumbler lock, a cylinder and a single housing for the entireset of tumblers each made 0t sheet metal. and secured together at theirends, the housing having a closed top, sidesand rear end.

4:. In a pin tumbler lock, a cylinder and housing each made of sheetmetal and connected at their ends, and pin tumblers mounted and guidedin the top of the cylinder and the top of the housing and free andunsupported between said cylinder and housing.

5. In a pin tumbler lock, :1. cylinder and housing each made of sheetmetal and bent into shape, the housing being provided at its ends withring shaped cnds to receive llaends ot the cylinder.

6. In a pin tumbler lock. a cylinder and housing each made (it sheetmetal bent into shape, the housing being provided with ring shaped endsto receive the ends of the cylinder and with projections to enter slotsin said ends.

7. In a pin tumbler lock, a \'lindcr. a sheet metal housing closed atits top. sides and ends and secured to the top oi the cylinder. andtumblers guided by and movable in holes in the top ot the c \'lindor andalso in the top ot the housing.

8. In a pin tumbler lock. a cylinder and a. housing securt-id to thelatter. the housing being made of sheet metal. and having loldcd sidesand ends, the trout end ha vine; side cars with holes throi'lgh the sametor the :lll:ll'll ment of a taco plate of the lock.

9. In a pin tumbler lock. a sheet mcia': cylinder termed tronl a latblanl; bent into cylindrical form. a housing made of sheet metal andsecured to the top (it the c' \lin lcr. tumblers mounted in and guidedby the top ot the cylinder and top o l' the housing and springs withinthe housing; and beariu; against the tumblers tor yicldingly holding thelatter in their operative position.

In testimony whereot. I have signed this specification in the presenceoi two subs-wribing witnesses.

JOHN B. FllllYSINGlCl-l. .Vitnesses CHAS. A. BERRY, Urns. ImnTN.

